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Transport and mechanical behavior in PEO-LLZO composite electrolytes

Journal Article · · Journal of Solid State Electrochemistry

Abstract

Composite solid electrolytes (CEs), wherein ion-conducting polymer and ceramic/glass is mixed, are promising candidates for all-solid-state batteries due to their promise of acceptable ionic conductivity and mechanical properties compared to their individual constituents. While numerous studies have focused on improving the performance of CEs, it is still unclear what the material targets are that can result in improved macroscopic performance especially in light of the coupled needs for high transport and high mechanical strength in these materials. In this study, a two-dimensional (2D) mathematical model is developed to investigate electrochemical and mechanical characteristics of CEs. The model is compared to CEs consisting of poly-ethylene-oxide (PEO) polymer and lithium lanthanum zirconium oxide (LLZO) ceramic material with examination of the impact of varying LLZO volume fractions. The potential drop at the PEO-LLZO interface is evaluated using the junction potential theory. Using experimental data from the literature, the model estimates the ionic conductivity, effective transference number, and mechanical stiffness of the CEs. While the mechanical stiffness improves with increasing volume fraction of LLZO, the impact on conductivity and transference number depends on interfacial resistance at the interface. Finally, the study reports CE’s potential to enhance Li-ion transport and mechanical properties to inhibit lithium (Li) dendrite growth.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1877696
Alternate ID(s):
OSTI ID: 1905891
Journal Information:
Journal of Solid State Electrochemistry, Journal Name: Journal of Solid State Electrochemistry Journal Issue: 9 Vol. 26; ISSN 1432-8488
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Germany
Language:
English

References (63)

Fabrication and Properties of Composites of Poly(ethylene oxide) and Functionalized Carbon Nanotubes journal October 2002
Computational Methods for Plasticity book January 2008
Electrochemical Stability of Li 10 GeP 2 S 12 and Li 7 La 3 Zr 2 O 12 Solid Electrolytes journal January 2016
Rational Design of Hierarchical “Ceramic‐in‐Polymer” and “Polymer‐in‐Ceramic” Electrolytes for Dendrite‐Free Solid‐State Batteries journal March 2019
Diffusion Limitation of Lithium Metal and Li–Mg Alloy Anodes on LLZO Type Solid Electrolytes as a Function of Temperature and Pressure journal October 2019
Lithium Ion Pathway within Li 7 La 3 Zr 2 O 12 -Polyethylene Oxide Composite Electrolytes journal September 2016
Effect of particle agglomeration and interphase on the glass transition temperature of polymer nanocomposites journal April 2011
Room temperature elastic moduli and Vickers hardness of hot-pressed LLZO cubic garnet journal July 2012
Mechanical behavior of Li-ion-conducting crystalline oxide-based solid electrolytes: a brief review journal November 2017
Some elastic properties of reinforced solids, with special reference to isotropic ones containing spherical inclusions journal January 1984
A.c. electrical properties of composite solid electrolytes journal October 1991
Enhanced mechanical strength and ionic conductivity of LLZO solid electrolytes by oscillatory pressure sintering journal October 2019
Effective properties of composite material based on total strain energy equivalence journal June 2019
A three-dimensional interconnected polymer/ceramic composite as a thin film solid electrolyte journal April 2020
PEO/LAGP hybrid solid polymer electrolytes for ambient temperature lithium batteries by solvent-free, “one pot” preparation journal December 2019
A theory of plasticity for carbon nanotube reinforced composites journal April 2011
Design of composite polymer electrolytes for Li ion batteries based on mechanical stability criteria journal March 2012
Electrochemical performance of a solvent-free hybrid ceramic-polymer electrolyte based on Li 7 La 3 Zr 2 O 12 in P(EO) 15 LiTFSI journal June 2017
Polymer-ceramic composite electrolytes for all-solid-state lithium batteries: Ionic conductivity and chemical interaction enhanced by oxygen vacancy in ceramic nanofibers journal May 2021
Lithium Dendrite in All-Solid-State Batteries: Growth Mechanisms, Suppression Strategies, and Characterizations journal July 2020
Flexible and ion-conducting membrane electrolytes for solid-state lithium batteries: Dispersion of garnet nanoparticles in insulating polyethylene oxide journal October 2016
Recent advances in all-solid-state rechargeable lithium batteries journal March 2017
Particles in composite polymer electrolyte for solid-state lithium batteries: A review journal January 2022
Electrochemical properties of a ceramic-polymer-composite-solid electrolyte for Li-ion batteries journal January 2016
Microstructure and Pressure-Driven Electrodeposition Stability in Solid-State Batteries journal January 2021
Diffusion and Reactions in Fractals and Disordered Systems book January 2010
Investigating the Calcination and Sintering of Li 7 La 3 Zr 2 O 12 (LLZO) Solid Electrolytes Using Operando Synchrotron X-ray Characterization and Mesoscale Modeling journal June 2021
Optimization of Block Copolymer Electrolytes for Lithium Metal Batteries journal June 2015
Elastic Properties of the Solid Electrolyte Li 7 La 3 Zr 2 O 12 (LLZO) journal December 2015
Inorganic Solid-State Electrolytes for Lithium Batteries: Mechanisms and Properties Governing Ion Conduction journal December 2015
Interfacial Stability of Li Metal–Solid Electrolyte Elucidated via in Situ Electron Microscopy journal October 2016
Garnet–Polymer Composite Electrolytes: New Insights on Local Li-Ion Dynamics and Electrodeposition Stability with Li Metal Anodes journal January 2019
Unveiling Interfacial Li-Ion Dynamics in Li 7 La 3 Zr 2 O 12 /PEO(LiTFSI) Composite Polymer-Ceramic Solid Electrolytes for All-Solid-State Lithium Batteries journal June 2021
Interrelationships among Grain Size, Surface Composition, Air Stability, and Interfacial Resistance of Al-Substituted Li 7 La 3 Zr 2 O 12 Solid Electrolytes journal August 2015
Ionic Conduction in Composite Polymer Electrolytes: Case of PEO:Ga-LLZO Composites journal December 2018
Improving Ionic Conductivity with Bimodal-Sized Li 7 La 3 Zr 2 O 12 Fillers for Composite Polymer Electrolytes journal March 2019
Properties of the Interphase Formed between Argyrodite-Type Li 6 PS 5 Cl and Polymer-Based PEO 10 :LiTFSI journal October 2019
Promising Routes to a High Li + Transference Number Electrolyte for Lithium Ion Batteries journal October 2017
Determining and Minimizing Resistance for Ion Transport at the Polymer/Ceramic Electrolyte Interface journal April 2019
Li 2 CO 3 : A Critical Issue for Developing Solid Garnet Batteries journal November 2019
Synergistic Coupling between Li 6.75 La 3 Zr 1.75 Ta 0.25 O 12 and Poly(vinylidene fluoride) Induces High Ionic Conductivity, Mechanical Strength, and Thermal Stability of Solid Composite Electrolytes journal September 2017
The Influence of Inert Oxide Fillers on Poly(ethylene oxide) and Amorphous Poly(ethylene oxide) Based Polymer Electrolytes journal September 2001
Single-ion BAB triblock copolymers as highly efficient electrolytes for lithium-metal batteries journal March 2013
Publisher Correction: High-energy long-cycling all-solid-state lithium metal batteries enabled by silver–carbon composite anodes journal March 2020
Correlation of the average hopping length to the ion conductivity and ion diffusivity obtained from the space charge polarization in solid polymer electrolytes journal January 2016
Lithium dendrite growth mechanisms in polymer electrolytes and prevention strategies journal January 2017
Hybrid electrolytes with 3D bicontinuous ordered ceramic and polymer microchannels for all-solid-state batteries journal January 2018
Nanothin film conductivity measurements reveal interfacial influence on ion transport in polymer electrolytes journal January 2019
Visualizing percolation and ion transport in hybrid solid electrolytes for Li–metal batteries journal January 2019
A review of composite solid-state electrolytes for lithium batteries: fundamentals, key materials and advanced structures journal January 2020
The Impact of Elastic Deformation on Deposition Kinetics at Lithium/Polymer Interfaces journal January 2005
Influence of the Processing on the Ionic Conductivity of Solid-State Hybrid Electrolytes Based on Glass-Ceramic Particles Dispersed in PEO with LiTFSI journal September 2020
Influence of Electrolyte Modulus on the Local Current Density at a Dendrite Tip on a Lithium Metal Electrode journal January 2016
Microstructure Evolution in Lithium-Ion Battery Electrode Processing journal January 2014
Impact of External Pressure and Electrolyte Transport Properties on Lithium Dendrite Growth journal January 2018
Comparing Cycling Characteristics of Symmetric Lithium-Polymer-Lithium Cells with Theoretical Predictions journal January 2018
Nanocomposites of Titanium Dioxide and Polystyrene-Poly(ethylene oxide) Block Copolymer as Solid-State Electrolytes for Lithium Metal Batteries journal January 2013
Free-Standing PEO/LiTFSI/LAGP Composite Electrolyte Membranes for Applications to Flexible Solid-State Lithium-Based Batteries journal January 2019
Newman and Balsara on Electrochemical Systems Fourth Edition journal March 2021
Controlling Ionic Transport through the PEO-LiTFSI/LLZTO Interface journal January 2019
Composite modeling for the effective elastic properties of semicrystalline polymers journal January 2007
Review on Polymer-Based Composite Electrolytes for Lithium Batteries journal August 2019
A Generalized Approach for Evaluating the Mechanical Properties of Polymer Nanocomposites Reinforced with Spherical Fillers journal March 2021

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